Plumber&#39;s furnace.



A. .l. ARCHAMBAULT.

PLUMBER'S FURNACE.

APPLICATION FILED FEB. ll, 1915.

Patented Nov. 7, 1916.

. WW I. X Y B A TTORNE YS.

ARTHUR J. ARCHAMBAULT, OF CHICAGO, ILLINOIS.

PLUMBERS FURNACE.

Specification of Letters Patent.

Patented Nov. 7, 1916.

Application filed February 11, 1915. Serial No. 7,499.

7 To all whom it may concern:

voir of a plumbers furnace or Be it known that I, ARTHUR J. ARGHAM- BAULT, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois,'have invented a certain new and useful Improvement in Plumbers Furnaces, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, refer ence being had to the accompanying drawings, which form a part of this specification.

My invention has for its object to produce a simple and novel reservoir construction for a )lumbers furnace b means of which two different kinds of fuel may be stored and supplied at will.

A further object of my invention is to produce a simple and novel compound reservoir arrangement for plumbers furnaces and the like, whereby pressure may be maintained on the liquid in the various compartments in a simple and convenient manner without danger of mixing the several kinds of liquids.

A further object of my invention is to produce a simple and novel valve device adapted to control the flow of fuel from the reservoir in the plumbers furnace to the burner, the same being so constructed that the grit and dirt will be strained out of the liquid fuel at a point which will protect the valve faces and in such a mannerthat the grit and dirt may easily be removed whenever desired.

A further object of my invention is to produce a novel pump construction to supply air under pressure into the fuel reserthe like.

A further object of my invention is to provide a plumbers furnace with a simple and convenient pocket or compartment for containing small repair parts.

The various features of novelty whereby my invention is characterized will hereinafter be pointed out with particularity in the claims; but, for full understanding of my invention and of its objects and advantages, reference may be had to the following detailed description taken in connection with the accompanying drawing, wherein:

Figure l is a side elevation of the base portion of a plumbers furnace arranged in accordance with my invention, partly broken away in order to show the interior; Fig. 2 is a section on an enlarged scale through the air valve between the two fuel reservoirs or compartments; Fig. 3 is an axial section through the lower end of the air pump; and Fig 4c is a section through a preferred form of valve between the main delivery-pipe and the main reservoir.

Referring to the drawing, 1 represents the main reservoir of the furnace which serves as the supporting base. Within this reservoir is a smaller reservoir, 2. The small reservoir is adapted to contain gasolene, alcohol or other fuel which will permit the furnace to be started readily while the main reservoir is adapted to contain kerosene or other fuel to be used after the burner has been set in operation.

3 is a pump. extending into the main reservoir and adapted to supply air under pressure to feed the liquid fuel from either reservoir. In the lower the pump is an inwardly projecting inverted cup-shaped part, 4, having in the center thereof a tubular member, 5, forming the discharge conduit for the air. Into the cupshaped member 4 is screwed an elongated perforated thimble, 6, containing a coiled spring, 7, on which rests a small disk, 8, provided with a stem, 9, projecting upwardly into the tubular member 5 and having on top thereof a suitable packing material, 10. On the under side of the member 8 is a stem, 11, projecting down into the spring.

Air may pass from the main reservoir to the auxiliary reservoir, but no fluid of any kind can pass in the opposite direction. This I accomplish by placing between the upper ends of the two reservoirs a suitable check valve device, 12, best illustrated in Fig. 2.

A further feature of my invention consists in a small cup-shaped chamber or comend of the body of I emptied.

apparatus beyond the partment, 13, extending downwardly from the top of the main reservoir into the interior thereof and provided with a detachable cap, 14:; the chamber or compartment being adapted to contain small repair parts for the furnace.

One of the chief causes of annoyance in the use of plumbers furnaces is the entry'of grit and dirt into the fuel reservoir from where it is carried by the fuel into the controlling valve or valves, conduits and burner, serving to clog them. It is almost impossible to prevent the entry of grit or dirt into the reservoir or reservoirs and I have therefore provided means for preventing it from leaving the reservoir and reach ing a place where it can cause annoyance. I accomplish this by placing in the main controlling valve casing a strainer which will arrest any particles of grit and dirt contained in the fuel and collect them until such a time as it may be convenient to re move the strainer and clean it. In Fig. 4: I have illustrated this feature of my invention. Referring to Fig. 4, 18 represents the body of the valve corresponding to the valve 16 and consists of an irregular cross-shaped casting one arm, 19, of which is the inlet end while the opposite arm, 20, is the outlet end. Opposite the arm 21 into which the valve stem, 22, projects is a short arm, 23. The inlet passage, 24, extends from the lower end of the arm 19 up through the arm 23 and terminates at the outer end of this latter arm. The arm 23 has a cup-shaped recess, 25, of considerable size just beside the passage 24L, and the valve member 22 controls communication between the lower end of this cup-shaped recess and the outlet passage 25 in the arm 20. Within the recess 25 is a thimble, 26, formed of wire mesh or other suitable material which will serve to strain grit and dirt out of the fuel passing through the valve and retain it until the thimble is taken out and On the outer end of the arm 23 is a cap, 27, suitably packed so as to prevent leakage to the exterior of the cap, while permitting free communication between the inlet passage 24 and the recess 25. With this arrangement, no dirt or grit can reach the valve seat or any portion of the valve seat. From time to time the cap 27 may be unscrewed and the thimble 26 be removed and cleaned.

While I have illustrated and described with particularity only a single preferred form of my invention, I do not desire to be limited to the exact structural details thus illustrated and described; but intend to cover all forms and arrangements which come within the terms employed in the definitions of my invention constituting the appended claims.

I claim: a

1. In a plumbers furnace, a main reservoir, an auxiliary reservoir arranged within the main reservoir, means for introducing air under pressure 'into one of said reservoirs, and a check valve for permitting air to flow from the latter reservoir to the other and preventing a back flow of air or liquid, said check valve including a spring tending constantly to close the same.

2. In a plumbers furnace, a main reservoir forming the base of the furnace, an auxiliary reservoir arranged in the top of the main reservoir, a small cup-shaped chamber projecting down into the main reservoir from the top thereof, and a plug for closing the top of the said chamber.

3. In a plumbers furnace, a main reservoir closed at the top, an auxiliary reservoir lying within the main reservoir and having its upper end closed by the top of the latter, there being a passage formed in the top wall of the main reservoir leading from a point within the auxiliary reservoir to a point in the main reservoir exterior to the auxiliary reservoir, and a valve in said passage. V

4. In a plumbers furnace, amain reservoir closed at the top, an auxiliary reservoir lying within the main reservoir and having its upper end closed by the top of the latter, there being a passage formed in the top wall of the main reservoir leading from a point within the auxiliary reservoir to a point in the main reservoir exterior to the auxiliary reservoir, a valve in said passage, said passage having a portion opening out to atmosphere, and a detachable plug in said portion. 1 I

5. In a plumbers furnace, a main reservoir closed at the top, an auxiliary reservoir lying within the main reservoir and having its upper end closedby the latter, there being a passage formed in the top wall of the main reservoir leading from a point within the auxiliary reservoir to a point in the main reservoir exterior to the auxiliary reservoir, said passage having a branch opening out through atmosphere, a detachable tubular member arranged within said passage and removable through said branch, a valve arranged in said tubular member, and a detachable plug for closing the outer end of said branch. I V 6. In a plumbers furnace, a main reservoir closed at the top, an auxiliary reservoir lying within the main reservoir and having its upper end closed by the top'of the latter, the top wall of the main reservoir containing a depressed portion forming a small cup-shaped chamber, and a detachable cover for said chamber.

7. In a plumbers furnace, a main reservoir closed at the top, an auxiliary reservoir lying Within the main reservoir and having distance above the top of the space Within 10 its upper end closed by the top of the latter, each of the reservoirs.

there being a passage formed in the top In testlmony whereof, I sign this speciwall of the main reservoir leading'from fication in the presence of two Witnesses.

a point within the auxiliary reservoir to a point in the main reservoir exterior to the ARTHUR ARGHAMBAULT' auxiliary reservoir, and a valve in said pas- Witnesses:

sage, the low point of the intermediate por- WM. F. FREUDENREICH,

tion of said passage lying at a considerable RUTH E. ZETTERVALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washingtoml) G. 

